As advised it's actually best to study a subject other than Journalism. Journalists very rarely write about journalism, which is why studying another subject you're passionate about would be more beneficial and could give you an advantage in a specific area of journalism i.e Sciences or technology.
My friend always wanted to become a journalist. She studied English Lit at a Russel Group Uni and came out with a first as well as squeezing some work experience during the holidays in broadsheets, magazine and tv journalism. After graduating she spent 1.5 years jumping from volunteering opportunity to volunteering opportunity with really well known publications, whilst all the time applying for entry level jobs. She made many connections and had really good references, but she just couldn't land that first position. She then took a paid job for 1/2 year to fund her Journalism diploma, which then took the following year to complete. It took her about 5 months after finishing her diploma to secure her first job writing for an online magazine. Again, another friend i knew studied English Literature (first class again) and then went straight on to the diploma course, whilst writing for the University paper and organising some work experience at the BBC. He managed to find a job in sports journalism pretty swiftly, but that was because he pursued a *comparatively* less popular area than magazine journalism.
I'm not trying to put you off, but you do need to be aware of exactly how much effort you have to put in to get there. Publications could not survive without the endless supply of volunteers, offering their services to gain experience. Obviously this is great as it means you can build a compelling list of work placements; however, the downside is that the industry has relatively few entry level jobs as these jobs can often be handled by interns for free. Entry level jobs also pay between the region of 13k - 21k (depending on location/publication). Journalism won't make you rich, but a lot of journalists do get some perks as part of their jobs as well as having what is regarded as an infinitely rewarding profession. Also, others often make the transistion into PR, which pays a lot better.
The more you tailor yourself towards a specific niche the better chances you'll have that your get there.